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Create and deploy a Java - MicroProfile / Java EE application
We have applications available for Node.js Express, Go Gin, Python Flask, Python Django, Java Spring, Java Liberty, Swift Kitura, Android, and iOS.
In this sample application, you will create a Java Liberty cloud application. This provides a starting point for creating Java web applications running on Open Liberty. It contains no default application code, but comes with standard best practices, including a health check.
This application exposes the following endpoints:
- Health endpoint:
<host>:<port>/health - Web content:
<host>:<port>/<contextRoot> - Web Application:
<host>:<port>/v1/example
The web application has a health endpoint which is accessible at <host>:<port>/health. The ports are set in the pom.xml file.
Steps
You can deploy this application to IBM Cloud or build it locally by cloning this repo first. Once your app is live, you can access the /health endpoint to build out your cloud native application.
Deploying to IBM Cloud
IBM Cloud DevOps services provides toolchains as a set of tool integrations that support development, deployment, and operations tasks inside IBM Cloud.
Building Locally
To get started building this application locally, you can either run the application natively or use the IBM Cloud Developer Tools for containerization and easy deployment to IBM Cloud.
Native Application Development
- Maven
- Java 8: Any compliant JVM should work.
- Java 8 JDK from Oracle
- Java 8 JDK from IBM (AIX, Linux, z/OS, IBM i), or Download a Liberty server package that contains the IBM JDK (Windows, Linux)
To build and run the application:
mvn liberty:dev- Press enter once the server is running to run integration tests.
To run an application in Docker use the Docker file called Dockerfile. If you do not want to install Maven locally you can use Dockerfile-tools to build a container with Maven installed.
You can verify the state of your locally running application using the Selenium UI test script included in the scripts directory.
IBM Cloud Developer Tools
Install IBM Cloud Developer Tools on your machine by running the following command:
curl -sL https://ibm.biz/idt-installer | bash
Create an application on IBM Cloud by running:
ibmcloud dev create
This will create and download a starter application with the necessary files needed for local development and deployment.
Your application will be compiled with Docker containers. To compile and run your app, run:
ibmcloud dev build
ibmcloud dev run
This will launch your application locally. When you are ready to deploy to IBM Cloud on Kubernetes, run one of the following commands:
ibmcloud dev deploy -t container // to K8s cluster
You can build and debug your app locally with:
ibmcloud dev build --debug
ibmcloud dev debug
License
This sample application is licensed under the Apache License, Version 2. Separate third-party code objects invoked within this code pattern are licensed by their respective providers pursuant to their own separate licenses. Contributions are subject to the Developer Certificate of Origin, Version 1.1 and the Apache License, Version 2.